Casting mechanism.



' PATENTED MAR. '13, 1906.

- W. T. KRAUSB.

CASTING MEGHANISM. APPIIUATOAN FILED A215.. 12, 1905.

' 2 SHEETS-SHEET l.y

' flttodflut ma reins. ma. um. Hulman. n'. c.

UNITED sTATns lPATENT OFFICE. 4

. WILLIAM' T. KRAUs, or BALTIMORE, MARYLAND, Assionon oF.

:ONE-THIRD To DAVID R. STEELE AND ONE-THIRD To-HARRYD. HARvEY, oFBALTIMORE, MARYLAAD.

To aZZ whom it may concern:

Beit known thatI, WILLIAMT. KRAUSE, a citizen ofthe United States,residing at Baltimore, in the State of Maryland, have. invented certainnew and useful Improvements in Molding or Casting Mechanism; andl I dohereby declare the following to be a full, clean..l

and exact description of the invention,- suoli-A as willenable othersskilled in the art to" which it appertains to make rand use the andclaimed. j

elevation.. Fig. 2 is a top plan view of the ing platel uponwhich thecope is supported v when the molding-sand is rammed within the same; ingthe cope after it has been packed withcope. Fig. 3 is a detailsectlo'nal view ytaken through the cope and the forming and shap- Fig. 1is a' detailsection'al view showsand and having aI core suspendedtherefrom. Fig. 54, isa detail sectional view through a portion of themold; showing the cope vand core in position in readiness for thepouring of the metal." f

It is the object of the' present invent-ion to so forma moldingapparatus that articles to be molded may be cast and 'removed from themold incomparatively quick succession.. The invention involves themolding or casting of 'articles in a metallic mold which re,

quires no sand in the body 'port-ion of.' the mold. In connection withthe metallic body portion; or y'drag of the mold a vcope is employed inwhich molding-'sandis tightly'l rammed "or tamped7 andy guiding meanslisprovided 'for effecting thequick and yetac.

curate seating ofthe cope upon the drag-ofv the mold,'insuringanaccurate centering ofthe core 'or l cores employed-1in connection withthe llask or mold.- v

In the accompanying drawings I have illus- 4tratedl a pract1calVmechanism 'for' carrying out the spirit of the invention, the saidmech- Specification of LetterQPatent.

rApplimttilm filed pril 12, 1905. Serial No. 25`i,130.v

' f cAsTlNG MEoHANlsM.

anism being made up ofa metallic ldrag or 'body portion of a flask, as1, and a cope?,

Whichcompletes the ilask,y resting upon the upper edges of the bodyportion 1. lThe drag or lower member ot;v the mold is preferrepentedMarch 13,1906.

ably providedwith trunnions l3, which .enf

gage1 ings 1,"foi'fmed` insupporting-st ando. By thus mounting the mold1t may be tipped for -facilitatiijigjthe dischargingof the moldedarticles thereiom. AThe interior' of the drag or lower member 1 of themold or ilaskis-shaped in accordance with the contour Which itisdesiredto impart to the article'cast. l The upper edge of 4the said drag1 is provided Wit-h outwardly-extending ilanges 6, which receive andsupport the ring 'or frame of the cope '2. Apertures 7 are formed in thesaid flange 6 for receiving pins, bolts,`

or projections carried bythe cope-frameand. used 1n centering andproperly positioning the cope with' respect to the drag when the membersofthe mold or flask are brought together.

body portion having a lower laterally-project-ing flange' 8,Wh`ich litsupon the lange; ofthe drag.` :.{Projecting inwardly from the walls ofthecope are core-supporting arms 9. There may be any desired number of suchcore-supporting arms; but four arms diamet- '.rically opposite to eachother usually sui'lice for properly holding a core imposition. The

copeis preferably formed withmeans for supportingA it in such a vmannerthatit may be turned over, so that lwhen it is to be tamped with sand itis rolled" over with one edge up-y permost, and when it Is to have acore secured thereto it is: --turned with the other. edge up,afterwhich'it is again rotated for brinoing the'core'in a suspendedposition beneatIi the cope and inread-ines's for insertion Within themetallic dragI or' mold. Asimple means offacilitating these movementsofthe cope is shown'in the drawings and' consists'of l laterallyextending arms or trunmons 10,

aised roo' The flask 2 is formed with a ring- I prins l11, which projectdoivnwardly there-l la'rly Well suited for the casting of twyers, suchas are commonly used in furnaces of various types. In the drawings Ihave illustrated the mechanism as adapted for cast- Aing tWyers of anordinary type, the twyers belng usually formed of brass and made -Withan annular hollow portion or recess around the outer edge thereof, Whileat the center there is a passage-way or aperture extending entirelythrough the said tW-yer. The life of these twyers in use may be greatlylengthened'if the walls of the tivyers are made of a uniform thicknessthroughout, and the molding device forming` the 'subject-matter of thisinvention is especially Well adapted for accurately producingr suchtwyers with f Wallsof uniform-thickness throughout.

The cope is made to support 'the core of the twyeror other articlecast., and for securing such core to the cope slender loops of castmaterial, preferably iron, as at 12', are mounted in the core, lthe corebeing formed and baked around the said loops. The loops are madesuiciently slender to be easily broken when the core is to be taken outof the casting, but are sufficiently strong to firmly hold the core inplace upon the cope. The lower ends of the supporting-loops 12 areprovided with heads or enlargements, as at 13, which assist in anchorinthe said loops Within the body portion of t e core. The upper bent endsof the loops 12 are engaged by hooked l bolts 14, Whichv are supportedupon the arms 9 and vengage thebifurcated inner ends 15 thereof. A nut16 upon the u per end of each o fsaid bolts serves to draw glie boltsupwardly and make theloops 12, together with the core, rigid with thecope. The arms 9 are arranged in radial relation to the cope-frame, sothat the bolts14 may be drawn'inwardly for a small-sized core or placedat a O'reater l distance from the center When using allargersized core.vThe cope-frame with4` the coresupporting :arms is' thus adaptable forthe casting or founding of dierent-sized articles. In forming the twyerssuch as above referred to a central core 17 is used, Whichis set intothe drag lor lower member' of the mold, a centralaperture being left inthe sand packed in central core 17 is formedl of baked sand or likesuitable material. I

In molding metal in a metallic mold it'is needful tof keep the mold at aproper temperature, and I therefore provide heating means for this purose'. In order to properly heat the mold, provide means which is :1.1 ed4beneath the mold when in its normolding position. mule any heating y beemployed, I `preferably use a Theburner, as 18, which is mountedopposite thev open end of a passage 19, formedm the base or brickwork 20beneath the mold. The passage-way 19 leads to a oint directly beneaththe mold, so that the ames and products of combustion from the burnerwill be delivered against the bottom of the mold and may be ymade tothoroughly heat the same. If a hydrocarbon-oil burner is employed, thede rec of heat applied may be varied as require yfor preserving theproper tem erature in the mold. By heating the mol in 'this manner Ifind that the metalwhichi poured 'into the mold lies against the innersurface of tli'e mold so closel as to receive a smooth and even surfaceafter it has become set and hardened.

In using the mold the cope isl removed.

from the body portion ofthe mold and is set upon a plate 21, which isprovided withapertures 22 to receive the pms 11. The plate is formedwith upwardly-projecting studs or bosses 23, which are arrangedin exactc orrespondencewith the position of the coresuspending loops 12.Centrally locatedupon the is made s ightly larger in diameter ythanv themold-core 1j. Molding-sand 'or some similar composition is then .packedin the cope and tamped down tightly against the plate 21 and around thecore-sup orting arms 9. The cope is then inverted 4y beinggrolled overupon its su porting-trunnions 119,- and the plate 21, wit its bosses andsterri`24, is

25 with its securing loops 12 are next secured to the su porting-arms 9.The saidcore 25 is molded) and baked With upwardly-extending conicalprojections 26, Which surround` the upper ends of the loops 12 and formap# ertures 27 in the top Wall of the twyers which are cast, throughwhich the `core may be removedafter it has been .broken up orpulverized. The-up er ends of the'` conical projections 26 are shg itlybroken from about the ends of the loops 12 in order to hook the bolts 14in the ends of the loops, and :thus be able to suspend the core from thearms 9 of the cope. The colpe after the'c'ore liasbeen secured to it ist en turned over u onjits 'tru'nnions, and any suitably-arrange -fhistisseated upon the mdld aln'd' for accurately` `and properlycenteringthpositipnof the core and cope with respectto Said mold. u Atop plate 27 is preferably placedupon-the top ofthe co e, as shown in;.'g. v1. v*naperture is ma e in th'eto'p plate allittle' larger than thediameter of thecentralcorefl 7 and plate is acylindrical block 24,Wl1ichi iov5 f moldandcope n 3.5- v j ingl articles with thismechanism' is.also'a .speedy one, since by they v lifted off,- an

as above pointed out,'the aperture formed in the 4sand-of the cope is.also,y slightly larger' vthan the central core, anda gate for pouringthe metal. is thus formed around they core -17 '.as .shown in Fig. 1.The moltenv metal ofy -the ti'vyer' or .other article is to .be formedis poured into the gate 28 and iillsthe 'space between the core 25 andthe mold and betvveenthe inner core 17=andy the outer core 25. Assocn asthe'metal is hardenedsui- 'ciently' the co e is separated from the.core,

thefmold is tipped upon its.v

. trunnions for turning the, article out of the same. The core 25 -isbroken 'within the tWyer, and the loops 1 2 may be broken and removedfrom their positions, after which the pulverized inner core can be blownor otherwise removed from the apertures 26 formed in the end wall of thetwyer.

The lower end of the centralcore 17 is iinished' ofi perpendicular Withthe a'Xis ofthe core and iits upon a flat central surfa'ce28, formed'4inthe bottom of the core, so that when the core 17 is set in positionfor casting it Will occupy a concentricposition inthe I find that incasting metaharticles this y mechanism is very accurate and capable ofproducing lperfect results, since the parts are pro erlyocatedivithrespect to eachother an lthe walls 'ot-such articles as t'ivyers can becast of even thickness throughout With-I out-'any particular adjustmentor careful at-I tent-ion on the part ofthe operators in bringing theparts'together. The process of cast- Ianiming of .a few copesbe ore themolding operation begins a number of castings may be made in quicksuccession. The copes can be quickly adjusted over the molds and themetal poured, and verysoon thereafter the com leted article may beturnedout of the mol when it is in readinessY for receiving another cope andforming another casting In this'manner. a number ofcastings may be madein vthel time ordinarily required for forming a single one by methodsin--comnion use. It is desirableto place some preparation upon the innersurface of the mold, which .will prevent. the metal fromadhering-thereto',

and I' find thatif the inner surface of the metal mold isV `rubbed with'graphite Vthe larticles will come outsmooth and' Well formed,` and onesuch reparation of the interior of the mold will last for a great manyin structure and not easily-gotten out of or er.

Of course l do not Wish to beunderstood 'as-limitingqm-yself to the.castin of tWyerS, thoughthe apparatus is. admira ly adapted 3; Acasting mechanism comprising a .shaped unlined'meta-lmold, a' cope'mounted on` the upper. Vopen edge thereof and having' reparation and-for this purpose, and I consider any change 4 in minor details of themecha'msm as clearly Within the scope of the invention.

L .'Having thus fully described my ini-rentrer;z

Whatl claim. as new, and desire to secure '1. A casting mechanism,comprising a 'metallicmold or drag closed kat the bottom, a

cope suspended across theop'en top, a. core suspended from said-cope andvertically.-

movable'jointed suspending -meansvfr'supporting. saidA core," themovementfofsaid lmeans effecting the vertical' adjustment of.

'thesaidcore 2. A casting mechanism, comprising a'cup-f shaped moldforming a .metallic ldrag," supporting-trunnions projecting from theupplffi portion. thereof, a cope extendingaerdsg .th-

projecting therefrom, a removable'core'hiiiig" om the under side of thecope, soas to' .project into said mold or drag and-vertically-a'dupperedge of the same, supporting-trunnions justable articulating supportscarrying' said'- core.

core-supports eidend'ingi inwardly over the mouth of 'the mold, ajustable-'suspensioiif' meansl carried b said projections', a corearembedded therein for engaging the said sus'- pension means and thuscore Within the mold.

4. A molding mechanism, .com rising hollow. metallic mold, a co'pe capaleof it-l ting upo'n said mold, a-core,vertically-adj11st- `ablesuspending means formed of jointed sections for holding the core uponsaid cope','a'nd.

meansfordirecting the copeaccu'rately in;

ranged `to exten Within the mold and means* properlyholdingthe' lesposition uponthe mold for 'properly centering the core'therein. j

5. A'casting mechanism, comprisinga'umet'allic mold a cope capable ofbeing accurately n positioned over the same', .a core adju'stablysuspended beneath-the cope, the .saidjcore having hook-engaging means fl'proeting above its u persurfaceand'vertica'y-adjustable hoo carried bythe cope 'and yeilgaging said hook-engaging means, for hold;-

ing thecore in place.

"6.. A casting mechanism*comprisingfa mold, a cope arranged. abovethesame and' having inwardly-extending core-sup 'orting arms, aremovable core, loops molde Y inthe: `V said core' and means carried bysaid arn'is'for engaging and removably suspending the loops from thesaid arms.

7.*A casting mechanism, .comprising a- A mold, a cope fitting uponthesame,'co' mpris'- mg a ri'nfr or frame, inwardly-projecting arms* havingslotted inner. ends, 4bolts mounted the slotted ends of said arms, andcore-sup#` tach'inga core to the cope-armsk 8.; '1% roasting y,meeliansmf mmprsing a mold@ cope.itting upon-the Same 'wd 1'0-v'Jvidedfwitli-supporting-trunnons by W `clf1` thee eopemay be` elevatedor de res'sed or 5 may beturned ove'lfuponla suitab el support,`

)ineens carried by tbe .cope land engaging .the-moldor properlycentering the core wlth- Ainj'the mold. 4'

1Q.'A `casting mechanism, `comprising a metallic mold, a' `removable.copey mounted arms-mounted in the cope] thereon and carrying ,sg core,the corebeing capable of projecting into the moldtl1e cope;

having `@central o ening'fo'rmed thereinLand ..centrel removalb e cerearrangedwithn the -Core-supporting cope."-

.,f: In;.testimonywhereof l my lslgnamne lnpresence of two'Witwesees.

WILLIAM T, REMISE..

Witnesses:

' FnnDEmoK=S.NIo1-10L, SA'oKvnLEJC'. WoLLETr.

